1
Donald E Knoth: Limb brace with adjustable hydraulic resistance unit. Mauch Laboratories, Jacox Meckstroth & Jenkins, December 5, 1995: US05472412 (113 worldwide citation)

An articulated knee brace includes a pair of arms pivotally connected by corresponding pivot pins and gear segments supported by a set of hub plates having holes for receiving adjustable stop pins. The arms are attached by flexible and releasable bands to a person's limb on opposite sides of a joint ...


2
Donald E Knoth: Hydraulic control unit for prosthetic leg. Jacox & Meckstroth, April 11, 1995: US05405409 (98 worldwide citation)

A prosthetic leg has a pivotal knee joint and a hydraulic fluid control unit connected to provide variable forces which dampen flexion and extension of the knee and also bias the leg to its extended position. The unit includes an aluminum housing lined with an axially adjustable sleeve and control b ...


3
Donald E Knoth, William L Phillips: Hydraulic control unit for prosthetic leg. Mauch Laboratories, Jacox & Meckstroth, August 22, 1995: US05443521 (84 worldwide citation)

A prosthetic leg has a pivotal knee joint and a hydraulic fluid control unit connected to provide variable forces which dampen flexion and extension of the knee and also bias the leg to its extended position. The unit includes an aluminum housing lined with an axially adjustable sleeve and control b ...


4
Donald E Knoth, James W Bradbury, Mark A Nagy: Radial piston and cylinder compressed gas motor. Pneumotor, Pearne Gordon McCoy & Granger, September 17, 1991: US05049039 (15 worldwide citation)

A radial piston and cylinder compressed gas motor is disclosed which is particularly suited for use where economical power sources are required. The motor includes a cylinder block having a plurality of radially extending cylinders open at their outer ends to radially extending passages and having e ...